微生物肥料对青梗花椰菜生长和土壤微生物特性的影响

发布时间：2018-03-12 23:30

本文选题：微生物肥料　切入点：青梗花椰菜　出处：《草业科学》2017年03期 　论文类型：期刊论文

【摘要】：以微生物肥料不同施用方式[A(不施肥,CK);B(施微生物肥料);C(70%化肥+微生物肥料);D(100%化肥)]进行田间试验,研究其对青梗花椰菜(Brassica oleracea)生物指标和土壤微生物学指标的影响,为寻找合理的施肥方案提供理论依据。结果表明,与CK相比,处理B、C、D可不同程度地提高青梗花椰菜株高、茎粗、叶片数等生物指标和土壤微生物学指标。不同处理下土壤微生物数量、微生物生物量均随土层的加深而降低。不同施肥处理下微生物数量表现为细菌放线菌真菌。其中,处理C效果最佳,与处理D相比,青梗花椰菜株高、茎粗、叶片数、地上鲜重、地上干重、地下鲜重、地下干重、细菌数量、放线菌数量、微生物总数、土壤微生物生物量碳、土壤微生物生物量氮和土壤微生物生物量磷分别增加了6.82%、11.53%、11.76%、9.68%、33.33%、62.5%、33.33%、34.04%~37.61%、8.42%~15.87%、32.53%~33.86%、13.56%~18.6%、3.99%、12.81%~17.99%,真菌数量减少了26.23%~32.89%。不同施肥处理下土壤微生物生物量与微生物数量存在一定程度的正相关关系。因此,70%化肥+微生物肥料对青梗花椰菜生长具有良好的促进效果。
[Abstract]:The effects of microbial fertilizer on biological indexes and soil microbiological indexes of Brassica oleracea were studied by using different application methods of microbial fertilizer [A (no application of microbial fertilizer) 70% fertilizer and 100% chemical fertilizer]. The results showed that, compared with CK, the treatment could increase the plant height and stem diameter of cauliflower in varying degrees. Under different treatments, the number of soil microbes and microbial biomass decreased with the deepening of soil layer, and the number of microbes under different fertilization treatments was bacteria actinomycetes. Compared with treatment D, the plant height, stem diameter, leaf number, aboveground fresh weight, aboveground dry weight, underground fresh weight, underground dry weight, bacterial number, actinomycetes, total microorganism, soil microbial biomass carbon were the best in treatment C. Soil microbial biomass nitrogen and soil microbial biomass phosphorus increased 6.82% and 11.53%, respectively. There was a positive correlation between soil microbial biomass and microbial quantity under different fertilization treatments. There was a positive correlation between soil microbial biomass and the number of microbes under different fertilization treatments, so there was a positive correlation between soil microbial biomass and the number of microbes in different fertilization treatments, so there was a positive correlation between soil microbial biomass and the number of microbes in the soil, and there was a positive correlation between soil microbial biomass and the number of microbes in different fertilization treatments, therefore, there was a positive correlation between soil microbial biomass and the number of microbes in different fertilization treatments, and there was a positive correlation between soil microbial biomass and the number of microbes in different fertilization treatments, therefore, there was a positive correlation between soil microbial biomass and the number of microbes. Fertilizer microorganism fertilizer has a good promoting effect on the growth of cauliflower.
【作者单位】：甘肃农业大学草业学院草业生态系统教育部重点实验室;中-美草地畜牧业可持续发展研究中心;
【基金】：国家自然基金(31360584) 甘肃省IFAD·GEF旱地生态保护与恢复项目(GEF-09-CN)
【分类号】：S154.3;S635.3

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